Christian schmidt



(No Model.)

O. SCHMIDT.

$I OKLB BAR FOR HARVESTERS.

N0. 271,923. Patented Feb.6,1883.

- 'INVENTOR iii :2

WITNESSES aw 49 G ATTORNEYS.

UNITED STATES PATENT OFFICE.

CHRISTIAN SCHMIDT, OF MIAMISBURG, OHIO, ASSIGNOR OF THREE-FOURTHS TOFRANZ LIESENHOFF, ADAM SILBERMAN, AND JOHN STOCKER, ALL

OF SAME PLACE.

SlCKLE-BAR FOR HARVESTERS.

SPECIFICATION forming part of Letters Patent No. 271,923, dated,February 6, 1883. Application filed November 29, 1882. No model.)

To all whom it may concern: I

Be it known that I, CHRISTIAN SCHMIDT, of Miamisburg, in the county ofMontgomery and State of Ohio, have invented certain new and usefulImprovements in Sickle-Bars; and. I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same, refer 1o ence being had to the accompanying drawings;

which form a part of this specification, and in which- Figure l is aplan view of my improved sickle-bar. Fig. 2 is a similar view with the 1top bar removed. Fig. 3 is a plan view of the inside of the top bar, andFig. 4 is a cross-sec tion of the sickle-bar on line ac, Fig. 1, lookingin the direction indicated by the arrow.

Similar letters of reference indicate corre- 2o sponding parts in thefigures.

My invention has relation to sickle-bars for reaping and mowingmachines; and it consists in the improved construction and combinationof parts of the same, as hereinafter more fully 2 5 described andclaimed.

In the accompanying drawings, the letterA indicates the cutter-blades,the cutting part of which may be of any desired construction and shape,but which have a square base or plate,

0 B, which is inserted between and held fast by two flat-bars, C and D,which form the sicklebar proper. The upper bar, C, has a longitudinalgroove, E, along its rear part, which corresponds to a similar groove,F, in the 3 5 lower bar, and in the recess thereby produced rests a bar,,G, against which the bases of the teeth bear. The lower. bar, D,has twooffsets or shoulders, H and I, on its inner surfaceone at eachend-forming a recess, Q, in which 40 the blades are placed, both ofwhich are cut slightly obliquely off, wider in front than in the rear,and the two blades at the ends are cut off obliquely to correspond,which serves to hold them in place. The offsets are of the 4 5 samethickness as the blades, so that the upper bar,which is secured to thelower by screws J in both ends of the bar,will bear tightly down uponthe blades. The rod G is provided with a nut, K, at the inner end, andis screwed into a cross-piece, L, at the outer end, whereby the rod isheld rigidly in place and serves to hold the cutter-blades in place,preventing them from sliding out at the rear of the bar. Through a holein the cro'sss-pieceL, and fitting into two screw-threaded recesses, Mand N, in the ends of the upper and lower bar, passes a screw, 0, theend of which bears against the end blade and serves to hold the bladesfast.

P is the eye-piece for the pitman coupling, which may be of any desiredconstruction.

When it is desired to remove a blade and insert another the screw 0 isloosened, the cross-piece L is unscrewed from the rod G, which iswithdrawn by the end provided with nut K, when the blade may be pushedout at 6 the rear of the bar and another one inserted, or all the bladesmay be taken out to be ground and inserted again when the rod isreplaced and tightened and the screw 0 tightened until the blades sitfirmly in the bar. 70

Having thus described my invention, I claim and desire to secure byLetters Patent of the United Statcs- 1. In a sicklebar, the combinationof the bars C and D, grooved at E and F, and formin g recess Q, rod G,adapted to hold the blades in position, cutter-blades A, andfasteningscrew 0, substantially as shown and set forth.

2. In a sickle bar, the blades A, having square bases B, the upper bar,0, having longi- 8o tudinal groove E and screw-threaded recess M in oneend, the lower bar, D, having offsets H and I, oblique on the inside,forming recess Q, longitudinal groove F, and screw-threaded recess N,rod G, having not K in one end and 8 screwed into the cross-piece L atthe other end, cross piece L, having screw-holes for the reception ofone end of rod G and for screw 0, and screw 0, all constructed andcombined substantially as shown and set forth. 9o

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

CHRISTIAN SCHMIDT.

Witnesses LEwIs H. ZEHRING, LEWIS SMALL.

